Filtering device



Oct. 10, 1933. E. PERLMAN FILTERING DEVICE Filed De q. -14, 1931 zf'dwora @r/maiz INVENTOR 1 BY M ATTORNEYS 'I'hediac4.mayalsobe Patented Oc 10, 1933 UNITED STATES FILTERING DEVICE Edward Perlman, Cicero, Ill.

Application December 14,- 1931 Serial No. 581,003

5 Claims. (cram-1 62) My invention relates to improvements in filtering devices, and it consists in the combinations, constructions, and arrangements herein described and claimed.

5 An object of my invention is to provide a filtering device particularly adapted for use in nonmetallic coffee urns and. the like.

A further object of my invention is to provide a filtering device adapted for being quickly and 0 easily insertable in and removable from con- .tainers having an annular groove.

A further object is to provide a novel means whereby a filtering member within a coilee urn may be quickly and easily secured in or discon- Ynected from its filtering position.

, A further object is to provide a retaining means for-holding a filtering member within a tubular member. A further object of my invention is to provide a device which will securely engage the inner walls of a tubular member in a spring-pressed manner.

A further object is to provide a device which is an improvement over the device of my co-pending application, Seria1 No. 501,391.

A further object is to provide a device which is simple in construction, durable in use, economical to manufacture, and efiicient and convenient for the purpose intended.

Other objects and advantages will appear in the following specification, and the novel features of the invention will be particularly pointed out in the appended claims.

My invention is illustrated in the accompan 5 mg drawings, forming part of this application, in

which Figure Us a top plan view of the device of my invention showing the filtering element partly broken away,

Figure 2.15 a-section taken along the line 2--2 of Figure l, and

Figure 3 is an enlarged sectional view of 'a lower portion of my device.

In carrying out my invention, I provide a ring 5 1 which is encircled by a helical coil 2. the ends of which may abut againsteach other, as is indicated at 3. The ring l'may be made of metal or any other suitable 2 is preferably made or material, such as, for instance.

I also provide a disc 4 any sufllciently resilient plated steel.

with a threaded opening 6 adapted to threadedly receive a lower threaded portion 7 of the rod 5.

provided with a plureadily understood. In my invention may be employed with any container material. The helical coil having an upstanding rod 5. The disc 4; may, if desired, be providedrality of radically extending arms 8 which may be formed integral with the disc or secured thereto by any suitable means, such as, for instance, bolts or rivets 9. These arms may be angular in form and may be provided with a vertical end so portion 10 having a recessed portion 11 of a size adapted to rigidly engage the ring 1 when the device is assembled.

The filtering devicemay be provided with a flexible porous or perforated filtering element 12 havo5 ing a diaphragm 13 and an integral annular curved portion 14 having an inwardly extending flange 15. The filtering element may, if desired, be made of cloth.

From the foregoing description of the various parts of the device, the operation thereof may be operation, the device of which may beprovided witha neck portion 16 shown fragmentarily in Figure 2. The container may be provided with a bowl 1'! having a reduced outlet portion 18 which may be held inposition by a seal 19 which is preferably formed from flexible or compressible material, such as rubber or the like. When the bowl and container are connected as shown in Figure 2, the interior of the container is of course sealed from the atmosphere. This container and bowl construction'is disclosed in my co-pending application and constitutes a coffee um or percolator, the construction of which is now well known to the art and is thought to require nofurther description. It is suflicient to say that when the container is partly fllled with water and the container is sufllciently heated, that a portion of the water is forced upwardly through the neck in the container.

The container is provided groove 20. The device of my with an annular invention may be conveniently inserted in the bowl through itsopen upperportion by grasping the rod 5 and placing a portion of the ring and coil in the groove 20. The rod 5 may then be brought to a vertical position which will force the fiexible'coil inwardly sufllciently for it to engage the remaining portion of the groove.

then be placed in the bowl Coii'ee or tea may and the container may be partially filled with The w ter in water and placed over a slow fire.

be forced upwardly the container has beenremoved from the fire, the liquid will descend through-the filteringelement 1!.

into the container. It is then ready to be used -as a beverage.

Iclaim: I

1. A device of the character described including a central section and a peripheral section, said peripheral section comprising a helical wire and a ring disposed within the coils of said wire, said central section comprising a disc having an upright handle portion and a plurality of radially extending arms for engaging the ring, each of said plurality of arms having a vertical recessed end portion for fixedly engaging said ring.

3. A device of the character described including a central section and a peripheral section, said peripheral section comprising a helical wire and a ring disposed within the coils 01' said wire, said central section comprising'a disc having an up right handle portion and a plurality of radially extending arms for engaging the ring, said disc and said arms being rigidly connected together.

4. A device of the character described including a central section and a peripheral section, said peripheral section comprising a helical wire and a ring disposed within the coils of said wire, said central section comprising a disc having an upright handle portion and a plurality of radially extending arms for engaging the ring, said helical wire entirely surrounding said ring and being provided with end portions, the end portions of said wire engaging each' other in a spring-pressed manner.

5. A'filter holder comprising a central member provided with a vertically extending handle and a plurality of radially extending arms, a ring secured to the ends 01' said arms, a helical spring surrounding said ring, and a filter carried by said spring and adapted to be pressed by the same against the annular wall of a receptacle.

EDWARD PERI-MAN. 

